SPARTACUS vs STAR TREK (Fan Art) The below context tells how this unlikely scenerio could happen.
The Guardian of Forever ( From:
http://en.memory-alpha.org/wiki/Guardian_of_Forever)
The Guardian of Forever is a construct of an unknown, ancient alien race, that functions as a time portal, a gateway to the time vortex that allows access to other times and dimensions. It is located on an ancient planet where the focus of all timelines throughout at least the Milky Way Galaxy converge. It is apparently sentient, responding to external stimulus such as questions and actions, and can even somehow control the flow of time. It generates immense ripples in time that manifest themselves as spatial disturbances in the region around the planet where it is located.
The Guardian is located among the ruins of a large, forgotten city that stretched beyond the horizon in all directions around it. Based on initial observations, the ruins appeared to be at least one million years old.
Capable of speaking to those around it, the Guardian explained that it is “its own beginning and its own ending,” and that, “since before your sun (Sol) burned hot in space, [it had] awaited a question.” Apparently an inert formation of quasi-metallic substance, the Guardian creates portals to other times.
The Guardian was first discovered by the crew of the USS Enterprise in 2267. Encountering powerful waves of space displacement, which Spock described as “ripples in time,” the Enterprise tracked the waves back to their point of origin on a previously-uncharted planet. Doctor McCoy, suffering from paranoid delusions as a result of an accidental overdose of cordrazine, beamed down to the surface in an attempt to escape the ship. Searching for McCoy, Captain Kirk and Spock encountered and made contact with the Guardian, who offered them the chance to explore the past. As the Guardian was displaying images from Earth history, McCoy emerged from hiding and leapt through the time portal, arriving on Earth in the year 1930. The landing party soon discovered that they had lost all contact with the Enterprise, and the Guardian informed them that McCoy had affected a change in history, wiping out their civilization. Realizing that they must correct the damage to history, Kirk and Spock had the Guardian replay Earth history, and traveled through the portal to a point in time prior to McCoy’s arrival. Eventually successful in thier effort to restore the timeline, the Guardian returned all three of them to their proper place and time, mere moments after they initially departed. (TOS: “The City on the Edge of Forever”)
